Using your Milwaukee M12 3/8 in. Drill Driver is easy. First, insert the appropriate bit into the all - metal ratcheting chuck and tighten it. Then, select the right speed setting depending on your task. For lighter work, use the 0 - 400 RPM setting, and for more heavy - duty jobs, switch to 0 - 1,500 RPM. When using the tape measure, simply pull it out and lock it in place when you get the desired measurement. Make sure to keep the drill away from water and extreme temperatures. After each use, wipe the drill with a clean, dry cloth to remove dust and debris. Check the battery charge level using the on - board fuel gauge and recharge it when needed. For the tape measure, avoid bending it sharply and store it in a dry place. The tape measure has a limited lifetime warranty, so if you encounter any issues, contact the manufacturer.